2.2丂傾僫儘僌捠怣傪梡偄偨僔僗僥儉
丂FM攇偵傾僫儘僌偺僩乕儞怣崋傪忔偣偰敪怣偡傞偙偲偱埨斲妋擣傪峴偆僔僗僥儉傪摿掕彫揹椡柍慄婡傪梡偄偰峔抸偟偨丏憲怣婡偼埨斲忣曬敪怣惂屼夞楬傪慻傒崌傢偣丆庴怣婡偼憲怣婡偐傜憲怣偝傟偨敪怳壒傪僐儞僺儏乕僞偱夝愅偡傞偙偲偵傛偭偰埨斲妋擣偱偒傞丏
丂憲怣婡偼乽柍帠乿偲婰偝傟偨椢偺儃僞儞偲乽梫媬彆乿偲婰偝傟偨愒偺儃僞儞偺偆偪丆偳偪傜偐傪墴偡偲忣曬偑敪怣偱偒傞巇慻傒偵側偭偰偄傞丏椢儃僞儞傪墴偡偲乽巹偼乮壠懓偼乯柍帠偱偁傞乿偲偄偆忣曬傪揹攇偵傛偭偰敪怣偱偒傞丏
丂忣曬傪敪怣偡傞乽柍帠乿丆乽梫媬彆乿偺儃僞儞偵偼偦傟偧傟堎側傞僩乕儞偑妱傝摉偰傜傟偰丆偳偪傜偐偺儃僞儞傪墴偡偲丆偦傟偵懳墳偟偨僩乕儞傪敪惗偟丆僩儔儞僔乕僶偑乽僺乕乿偲偄偆敪怳壒傪揹攇偵傛偭偰憲怣偡傞丏庴怣懁偱偼僷僜僐儞偑怣崋偺僩乕儞偺堘偄偵傛偭偰丆屄恖偺埨斲傪妋擣偡傞丏
丂1997擭8寧偵峔抸偟偨僔僗僥儉偺幚抧幚尡傪峴偭偨丏婎抧嬊偐傜30-50倣偺嫍棧偱婎抧嬊偲偺娫偵忈奞暔偑側偄億僀儞僩5揰丏婎抧嬊偐傜30-50倣偺嫍棧偱婎抧嬊偲偺娫偵忈奞暔偑偁傞億僀儞僩5揰丏婎抧嬊偐傜100-200倣偺嫍棧偺億僀儞僩5揰偺慡偰偐傜惓妋偵忣曬傪庴怣偱偒偨丏
丂幚尡偵嶲壛偟偨恖傪懳徾偲偟偰憖嶌惈偲桳梡惈偵偮偄偰暦偒庢傝挷嵏傪峴偭偨丏偦偺寢壥丆婡夿偵庛偄恖偱傕憲怣憖嶌偼梕堈偱偁傞偲偺寢壥偑摼傜傟偨丏暦偒庢傝懳徾幰偺偆偪丆暫屔導撿晹抧恔偱壠偺壓晘偒偲側傞旐奞傪庴偗偨恖偐傜偼丆乽壠偺壓晘偒偵側偭偰偄傞応崌偱傕尯娭岥偵憲怣婡傪愝抲偡傟偽嬤強偺恖偑憲怣婡偺憖嶌傪偡傞壜擻惈偑崅偄乿偲偺堄尒偑暦偐傟偨丏庴怣僔僗僥儉偺憖嶌偵偮偄偰偼乽Microsoft幮偺昞寁嶼僜僼僩Excel偺憖嶌偵姷傟偰偄傞恖偱側偄偲擄偟偄丆媡偵Excel偵姷傟偰偄傞恖側傜憖嶌偑壜擻乿偲偄偆堄尒偑暦偐傟偨丏
丂忋婰偺僔僗僥儉偼抧堟偺悽懷悢偲摨悢偺廃攇悢僶儞僪傪梡堄偟側偗傟偽側傜側偄丏偙偺偙偲偼丆幚梡忋丆戝偒側忈奞偲側傞丏

2.3丂僨僕僞儖捠怣傪梡偄偨僔僗僥儉
丂1偮偺廃攇悢僶儞僪偱埨斲忣曬偺憲庴怣偑壜擻側傛偆偵丆僨僕僞儖捠怣傪梡偄偨僔僗僥儉傊夵椙傪峴偭偨丏憲怣婡偼埨斲忣曬敪怣惂屼夞楬偱丆憲怣婡偺埵抲忣曬丆埨斲忣曬傪僨僕僞儖壔偡傞丏1夞偺憲怣帪娫偼僿僢僟偺憲怣偵偐偐傞帪娫0.7昩掱搙傪娷傔偍傛偦1昩偱偁傞丏堦掕帪娫偵1搙丆儔儞僟儉側帪崗偵埨斲忣曬傪敪怣偡傞傾儖僑儕僘儉偵傛傝丆1偮偺廃攇悢僶儞僪偱暋悢偺憲怣婡偺愝抲傪壜擻偵偟偨丏憲怣婡偺愝抲壜擻戜悢偵偮偄偰偼僔儈儏儗乕僔儑儞偵傛傝専摙傪峴偭偨[7]丆[8]丏
丂FM攇偺応崌丆憲怣婡偐傜偺怣崋偑廳側偭偨応崌偼嫮偄怣崋傪庴怣偡傞偙偲偑偱偒傞丏僔儈儏儗乕僔儑儞偱偼丆埲壓偺(a)丆(b)偺俀偮偺僷僞乕儞偱憲怣壜擻戜悢傪媮傔偨丏

(a) 怣崋偑廳側偭偨応崌偵慡偰偺怣崋偑庴怣偱偒側偄偲偡傞
(b) 怣崋偑廳側偭偨応崌偵嫮偄怣崋偼庴怣偱偒傞偲偟偰丆堄恾揑偵庴怣婡偺埵抲偱怣崋偵嫮庛偑偱偒傞傛偆偵憲怣婡偺怣崋傪挷惍偡傞

 


丂10,000夞偺僔儈儏儗乕僔儑儞傪峴偭偨帪偺暯嬒庴怣惉岟棪偑99%埲忋偱桳岠偲偟偨応崌丆庴怣帪娫傪1帪娫偲偟偰(a)偱190戜丆(b)偱220戜偺憲怣婡偺愝抲偑壜擻偱偁傞偙偲偑傢偐偭偨丏

3丏埨斲妋擣僔僗僥儉偺峔抸
丂杮僔僗僥儉偼恊婡偲巕婡偐傜側傞僋儔僀傾儞僩僒乕僶幃偱峔惉偟偨丏2.2偺僔僗僥儉傛傝偝傜偵懡偔偺巕婡偲偺捠怣傪壜擻偵偡傞偨傔丆恊婡庡摫宆偺弌惾曽幃偱埨斲忣曬傪廂廤偡傞丏嵭奞敪惗屻丆巕婡偼乽柍帠乿丆乽梫媬彆乿丆乽柍憖嶌乿偺偄偢傟偐偺忬懺偵側傞丏恾3偺傛偆偵丆恊婡偼奺巕婡偵弴斣偵埨斲妋擣僷働僢僩傪憲怣偟丆巕婡偼恊婡偺屇傃偐偗偵墳偠偰埨斲忣曬傪曉偡丏
丂1戜偺巕婡偲偺憲庴怣偵偐偐傞帪娫偼栺2昩偱偁傞偺偱丆1帪娫偺庴怣帪娫偱1,800戜偺巕婡偺忣曬傪廂廤偱偒傞丏搒巗堟偱偼恖岥枾搙偑崅偔丆搶嫗搒悪暲嬫崅墌帥偺傛偆偵25,000恖乛km2傪墇偊傞抧堟傕偁傞丏杮僔僗僥儉偱偼恊婡1戜偑僇僶乕偡傞斖埻傪敿宎200m偲憐掕偟偰偄傞偑丆25,000恖乛km2偺抧堟偱偼3,140恖偑嫃廧偟偰偄傞偙偲偵側傝丆1悽懷摉偨傝1.57恖偱寁嶼偡傞偲2,000悽懷偲側傝丆杮僔僗僥儉偼廧戭枾廤抧堟偵偍偄偰傕1帪娫嫮偺庴怣帪娫偱埨斲忣曬偺廂廤偑壜擻偱偁傞偙偲偑傢偐傞丏側偍丆1悽懷摉偨傝偺恖悢偼丆搶嫗搒悪暲嬫暯惉17擭3寧1擔尰嵼偺乽挰挌暿悽懷悢媦傃恖岥乿傛傝崅墌帥杒丆崅墌帥撿偺恖岥偲悽懷悢傛傝嶼弌偟偨丏
丂偙傟傑偱偵惂嶌偟偨僔僗僥儉偼Windows95丆Microsoft幮偺Excel偱摦嶌偡傞傕偺偱偁傝丆怣崋偺擖椡偵偼僾儕儞僞偺抂巕傪巊梡偡傞側偳丆婡庬傗OS傊偺埶懚偑戝偒偐偭偨丏尰嵼斕攧偝傟偰偄傞僲乕僩宆PC偵偼僾儕儞僞抂巕偼側偔丆僔儕傾儖抂巕傕傎偲傫偳晅偄偰偄側偄丏崱夞偺僔僗僥儉偱偼丆偙偺揰偵偮偄偰傕夵椙傪峴偄丆恊婡偲PC偲偺愙懕偼RJ45偺Ether抂巕傪梡偄偨丏

丂杮僔僗僥儉偺捠怣傾儖僑儕僘儉傪埲壓偵帵偡丏

Step 1丂巕婡n = 1偲偡傞丏傑偨丆巕婡悢N傪愝掕偡傞丏
Step 2丂恊婡偼巕婡n偵埨斲妋擣僷働僢僩傪憲怣偡傞丏
Step 3丂巕婡n偼恊婡偵埨斲忣曬傪憲怣偡傞丏
Step 4丂n 亗 N偺応崌偼丆n = n + 1偲偟偰Step2偵栠傞丏n亖N偺応崌偼Step1偵栠傞丏

仼慜儁乕僕

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